Flowserve Limitorque MX DeviceNet Field Unit - Manual (Page 11)

11
Limitorque MX DeviceNet Field Unit FCD LMENIM2328-00 – 11/05
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The MX features include:
Non-intrusive setup •
Separately sealed terminal chamber •
Absolute encoder for valve position sensing (no battery required) •
32-character LCD for indication and calibration with configuration permitted in six languages. •
Sophisticated electronic control, monitoring, and diagnostic capabilities with LimiGard™ •
technology
2.2.2 DeviceNet Field Unit
The DeviceNet field unit is installed in the MX controls compartment. This unit permits the actuator to
be controlled by a host controller, typically a PLC, via the DeviceNet network. The DNFU includes two
high-level, surge-protected, and isolated network communication channels, configurable digital I/O, and
configuration via LCD screen. The following commands and information may be transmitted over the
DeviceNet network:
“OPEN,” “STOP,” and “CLOSE” commands •
“ESD” and “MOVE–TO” position commands •
Actuator status and alarm messages •
Six digital inputs and two analog inputs for user •
A surge-protected and isolated communication channels •
MX control panel configuration •
Torque output (for reference only) and position feedback •
Four digital outputs (standard) •
Figure 2.2 – DeviceNet Field Unit